Mechanism for operating the recording and reproducing mechanisms of telegraphones.



PATENTED MAY 1, 1906 P. 0. PEDBRSEN. MEGHANISM FOR OPERATING THE RECORDING AND REPRODUCING MECHANISMS OF TELEGRAPHONES. APPLICATION FILED mm; 21, 1901.

UNITED STATES.

PATENT OFFICE,

PEDER OLUF PEDERSEN, OF COPENHAGEN, DENMARK. MECHANISM l OR OPERATING THE RECORDING AND REPRODUCING MECHANISMS OF TELEGRAPHONES.

Specification of Letters Patent.

.To all whom it may concern.-

Be it known that I, PEDER OLUF PEDER- SEN, a subject of the King of Denmark, residing at Copenhagen, in the Kingdom of Denmark, have invented certain new and useful improvements in the mechanism for operating the recording and reproducin electromagnet in apparatus for magnetical y recording and reproducin speech, signals, messages, and the like, 0 which the following is a specification.

This apparatus relates to phonographs,or machines for recording and reproducing speech, messa es, or signals, with particular reference to the instrument known as the telegraphone, which is described in United States Letters Patent N 0. 661,619, dated November 13,1900.

The object of the present invention is to produce an automatically-moving carrier for the recording and, reproducing magnet, said carrier to be capable of traversing forward'and back over the recording-surface as long-as the instrument is in motion to record or obliterate a message or re roduce a message as many times as desired a The particular device herein described is intended especially for an instrument in which the recording-body is in the form of a Wire wound spirally upon the surface of a horizontal cylinder. It has been proposed heretofore to feedthe magnet along the wire by means of the mechanical engagement between the poles of the magnet and the convolutions of wire, the magnet resting by its weight upon the wire, so that as the cylinder is turne the spiral arran ement of the wire I e moved .along on its guides. In thepresent case the engagement between the ma et and the wire is not relied upon-to move t e magnet, but instead thereof an independent element connected with the same carriage which supports the magnet engages withthe spirally-wound wire to move the carriage and magnet-across the face of the cylinder in one direction, while in the other direction the same device is used in connection with a separate reverse screw or spiral to return the carriage and magnet to itsstarting-point. I

The present invention also provides automatic devices at each end of the cylinder to shift and trip the feed devices so'that the direction of motion will be reversed.

The invention will be fully described in con- Patented May 1, 1906.

nection with the accompanying drawings, in

which Figure 1 is a front elevation of a telegraphone with myimprovements attached thereto. Fig. 2 is a section on line A B of Fig. 1

Fig. 3 is a sectional view of the carriage and a- Figs. 4 and 5 are a portion of the cylinder. plan and elevation of the reversing mechanism at one end of the cylinder.

The standards a support the horizontal shaft 6, upon which is mounted the cylinder 0, whose surface carries a spirally-wound magnetizable wire (1, extending from end to end thereof: The cylinder is to be continuously rotated in any suitable way, a pulley being shown'at one end for this purpose. Above the cylinder and parallel thereto are arranged a smooth rod e and a second rod m, having a spiral thread n onit from end to end, said spiral being of much coarser pitch than that of the wire (1. On the rod e is a sleeve or carria e f, to which is attached a rearwardly-exten ing arm k, which passes below and beyond the rod m, and carries at its outer end a tooth l, directed toward and adapted to engage with the wire d, the, tooth bein weighted, as shown, to afford a good mec anical connection with the wire. On the upper side of arm 7c is another tooth or half-nut t, adapted to engage with the thread on the rod m.

s is an upwardly-reaching spring-arm having a head 8, affording a shoulder on its under side, forming ahook. On the upper side of sleeve f is pivoted at g a bell-crank r, having one arm projecting rearwardly and closely beside the spring 8 and the other projecting upwardly and having a finger p. When the rearwardly-projectin arm of the bell-crank is tipped sufficiently ow, the head 8 on the spring-arm will pass over and rest upon its upper edge, preventing the arm from rising until it is released.

g g are two forks resting over the extremities of the sleeve f and connected together by an arm h, which also supports the recording and reproducing magnet l, the latter being thus free to swing on the sleeve f. On the u per side of arm '7 is a post. 2, the end of w ch connects with the upwardly-project-q ing arm of the bell-crank r by means of a chain 0, whichis adjustable in length by means of the screw 0, to which its end is attached. When the bell-crankis engaged by a bent arm'wis the hook s,-.the wei ht of the magnet '21 and arm'h, acting throng the parts 12, 1, s, and 7c, lifts the toothl out of engagement with the wire d and holds the half-nut t in engagement with the thread on the rod m. At the same time in order that the bell-crank may engage with the hook s it must tip so far rearward as to lift the magnet 2' well out of contact with the wire (1, so that when the magnet falls back and lifts arm k it is prevented from touching the Wire (1 by nut "t resting against the rod m. On the other hand, when the hook s is out of en agement with the bell-crank both arms h and k are al-' lowedto fall and carry their respective parts i and 1 into engagement with the wire d,

which is the operative condition when recordi reproducing, or obliterating.

At i'ie left-handend of the instrument is a bracket 0, to which is pivoted on a vertical axis a blade 0, normally held in a plane oblique to .the axis of cylinder 0 by a spring 0 The lower half of this blade is in the path of movement of the finger g) on the bell-crank 1' and this portion of the lade is thinner than the upper portion, its thickness being indicated by the dotted lines in Fig. 4. In its normal position the blade rests against a portion of the bracket 0, as shown in Fig. 4, in which position the blade is adapted to be struck near its forward edge by the said finger in its traverse to the left. The bellcra is thereby tilted rearward, owing the inclined position of "the blade, and is thrown, beneath the hook s, where it is can t. Thus the movement of the carriage to t e left is interrupted and its movement to the right simultaneously commenced; Iii

' starting to the right the finger p strikes the 4 f opposite side of the blade 0, which then y1e ds onits pivot and allows the fin er to At the right-hand end of the .cy der ed, with 1ts end'in the path of movement of the head 8' on arm 8', so that when the carriage completesits extreme movement to the right the hook s is struck pass.

and moved 'outof engagement with the bellcrank, whereupon themagnetq', and the tooth Z are allowed to. fall into engagement with the wire d- In the operation of the instrument the cylinder c and the rod m are continuously rotated. To record speech, the speaking should usually commence when the carriage is atthe right-hand end of the cylinder. As

the speaking continues the carriage is fed.

along toward the left by the mechanical engagement between the tooth land the s iral wire (1. At the same time the poles o the 6o'magnet t are dragging in contact with thesame-wlre. -When the wire has been completely traversed by the ma net, the carriage is at the'left-ha nd end 0 the-cylinder. The'bell-crank is then tilted rearward by the blade and-thedireetion-ofmovement of the quickly toward the right-hand end ofthe cylinder byv reason of mechanical engagement between the half-nut t and the'rod m. As soon asthe carriage reaches the right-hand end of'th'e eylinder'its direction of movement is again reversed by contact with the arm w and the record previously made will now be reproduced, while the carriage again travels to the left. The carriage will continue to many reproductions of the record can be made as desired. I Having described my invention, I cla1m bination with the record-receiving surface or body, and a carriage movable with respect to each other, said carriage adapted-to ,carry a recording or reproducing device, of means independent of said recording or reproducing device, and actuated by the 'said record-receiving surface or body, for moving the careach other. 2. In a phonographic apparatus, the combination with a record-receiving surface or body, of a recording or reproducing device and a feeding device acting upon andther part of said surface or body for the purpose vice with respect to said surface or body.

3. In a phonographic apparatus, the combody in the form of a spiral, a carriagefor the ada ted to en a e with the record-receivin g g g s ace or body to cause a movementof the carriage and means for reversing the direction traverse.

4. In a phonographic apparatus, the comthe'form of a spiral, of a carriage, a recordln riage and adapted \to engage with said spiral surface or bodyfor the purpose ofmoving the 'carriagewhen the. surface or body rotates.

' 5. In a'phonographicapparatus, the com;

in the form of av spiral, at eaded rod ar-' ranged parallel thereto, 'a carriage for the recor g and reproducingfeeding devices, devices carried by said carria e for en agingv with either the recording bo y or s ace or the threaded rod, and means for lifting the said devices out of enga ement with therod and into engagement witli the surface or bod; and viceversa. f r r 6. In a honographic apparatus, the comt e recording and carriage is reversed, the carriage traveling bination with a record-receiving surface or.

bination, with a record-recelvmg surface inor reproducing device cooperating with-'sai surface or body and supported by said 0811- I riage, and a tooth also supported by said carbination o a record receivinglsurface or body, a carriageadapted to carry travel forward and back until the motor which drives the cylinder is stopped, and as- 1. In a phonographic apparatus, the comriaae and surface or body with respect t acting uponone part of said surface or body,

of feeding the recording or reproducing de- I recording and reproducing devices, devices of movement of the carriage at the end of abination of a record-recelvin surface or body j reproducing devices, means connected with spectively engaging and disengaging the said said carriage and adapted to engage with the latch.

record-receiving surface or body to move the 9. In a phonographic apparatus, the comcarriage, and means for lifting the recording bination with a record-receiving surface or 5 or reproducin devices out of operative relabody, and a guide-rod arranged parallel theretion with saif surface and reversing the dito, of a-sleeve onsaid guide-rod, an arm prorection of travel of the carriage. ecting from said sleeve and carrying a feed- 3 5 7. In a phonographic apparatus, the commg device adapted to engage with the recordbination with the record-receivin surface or receiving surface or body or the purpose of body, of a carriage, two arms carried thereby moving the sleeve along the rod, a second and pivoted so as to rest against the recordarm loosely connected with said sleeve and 1 receiving surface or body, recording and readapted to carry the recording and reproduc- 40 roducing devices carried by one arm and a ing devices, the said'two arms rojectingfrom ceding device carried by the other arm and 0 posite sides of the sleeve, a ever pivoted to I 5 means for ting said arms out of contact the sleeve and connected with the second mentioned arm, a latch carried by the firstmentioned arm and adapted to be engaged 5 Y 1W:V'll3l}1l said surface or body, for the purpose set ort 8. In a phonographic apparatus, the combination with a record-receiving surface or body, a traveling carriage, two pivoted arms projecting from said carriage, one of said,

arms carrying the recording or reproducing devices and the other engaging with the recording-surface in order tosmove the carriage, a latch adapted to hold the two arms connected together so that the weight of one will offset that of theother and means for en ga ing and disengaging said latch.

testimony whereof I have hereunto set my hand in the presence of two witnesses.

PEDER OLUF PEDERSEN.

out of operative relation with the recording- Witnesses: surface and means located at the extremities E S. HAZEMANN, of the record-receiving surface or body for re- V POULSEN 

